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Physical Science 17 Test review True and False (11) • What is the central core of atom called? • Compare the masses of protons, neutrons, and electrons • Know where groups and periods are • How many electrons are in the 2nd E-level • How are C-12 and C-14 different? • • • • What are poor conductors of heat and electricity metals or nonmetals What is the atomic mass? What determines that identity of an atom? What happens to metallic properties as one goes across the table? Multiple choice (14) • Each energy level holds a maximum # of___ • Atoms with same P but different N are • What do dot diagrams represent? called___ • What particles make up P and N? • Elements in group 3-12 are called • Know where groups and periods are. • Be able to calculate mass number • who came up with the Plum Pudding model? • who discovered the nucleus? • who came up with the word “atom” meaning • Who put electrons in orbits? indivsible Completion (10) These terms will be used for the completion • Metals • Metalloids • Mass number • Isotopes • Transition elements • Periods • Average atomic mass • Atomic number • Chemical symbol • Electron cloud • Electrons • Quarks • Groups • Nucleus • Periodic table Worksheet part of test Be able to do the same type of chart as was on 17.2 quiz Example Symbol Atomic # Protons Electrons Na -23 29 Draw a reall atom picture of an element using the valence shells Ex. Draw Al-27 P= N= = Draw the electron dot of 3 atoms example F What is the charge, mass, and location of Protons, Neutrons, and electrons? Be able to draw pictures of Thomson, Bohr, and Rutherfords atoms. Neutrons 33 Mass#